What protein is responsible for activating phosphorylation of all kinases involved in the cell cycle?
A)Cdk
B)CAK
C)Cyclin
D)Cdk inhibitor

Question

Quizplus · Accepted Answer

CAK (Cdk-activating kinase) is responsible for activating the Cyclin-dependent kinases (Cdks) involved in the cell cycle by phosphorylating a specific residue on the kinase. Without this phosphorylation, the kinases are inactive and cannot drive the cell cycle forward. Therefore, option B) CAK is the correct answer. Choices A) (Cdk), C) (Cyclin), and D) (Cdk inhibitor) are not responsible for activating phosphorylation of all kinases involved in the cell cycle.

What Protein Is Responsible for Activating Phosphorylation of All Kinases